Lucas WintherandClaude Opus 5.5
cfc41c6a63
STC_SECRET, database URLs and API keys are no longer inherited by MCP child processes. Test: a fake server reports its environment. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
34 lines
1.7 KiB
TypeScript
34 lines
1.7 KiB
TypeScript
// A fake MCP server for tests. stdio: newline-delimited JSON-RPC on stdin/stdout.
|
|
// Exported `handle` is reused by the HTTP fake in mcp.test.ts.
|
|
export function handle(msg: any): any | null {
|
|
if (msg.id === undefined) return null; // notification
|
|
switch (msg.method) {
|
|
case "initialize":
|
|
return { jsonrpc: "2.0", id: msg.id, result: { protocolVersion: "2025-06-18", capabilities: { tools: {} }, serverInfo: { name: "fake", version: "1" } } };
|
|
case "tools/list":
|
|
return { jsonrpc: "2.0", id: msg.id, result: { tools: [{ name: "echo", description: "Echo text back", inputSchema: { type: "object", properties: { text: { type: "string" } }, required: ["text"] } }] } };
|
|
case "tools/call":
|
|
if (msg.params?.name === "env") return { jsonrpc: "2.0", id: msg.id, result: { content: [{ type: "text", text: JSON.stringify(process.env) }] } };
|
|
if (msg.params?.name !== "echo") return { jsonrpc: "2.0", id: msg.id, error: { code: -32602, message: `Unknown tool ${msg.params?.name}` } };
|
|
return { jsonrpc: "2.0", id: msg.id, result: { content: [{ type: "text", text: `echo: ${msg.params.arguments?.text}` }] } };
|
|
default:
|
|
return { jsonrpc: "2.0", id: msg.id, error: { code: -32601, message: "Method not found" } };
|
|
}
|
|
}
|
|
|
|
if (import.meta.main) {
|
|
if (process.argv.includes("--exit-immediately")) process.exit(3);
|
|
let buf = "";
|
|
for await (const chunk of Bun.stdin.stream()) {
|
|
buf += new TextDecoder().decode(chunk);
|
|
let nl: number;
|
|
while ((nl = buf.indexOf("\n")) !== -1) {
|
|
const line = buf.slice(0, nl).trim();
|
|
buf = buf.slice(nl + 1);
|
|
if (!line) continue;
|
|
const reply = handle(JSON.parse(line));
|
|
if (reply) process.stdout.write(JSON.stringify(reply) + "\n");
|
|
}
|
|
}
|
|
}
|